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- #!/bin/sh
- test $# -ge 2 || { echo "Syntax: $0 SRCTREE OBJTREE"; exit 1; }
- # cd to objtree
- cd -- "$2" || { echo "Syntax: $0 SRCTREE OBJTREE"; exit 1; }
- # In separate objtree build, include/ might not exist yet
- mkdir include 2>/dev/null
- srctree="$1"
- status() { printf ' %-8s%s\n' "$1" "$2"; }
- gen() { status "GEN" "$@"; }
- chk() { status "CHK" "$@"; }
- generate()
- {
- local src="$1" dst="$2" header="$3" insert="$4"
- #chk "${dst}"
- (
- # Need to use printf: different shells have inconsistent
- # rules re handling of "\n" in echo params,
- # and ${insert} definitely contains "\n".
- # Therefore, echo "${header}" would not work:
- printf "%s\n" "${header}"
- if grep -qs '^INSERT$' "${src}"; then
- sed -n '1,/^INSERT$/p' "${src}"
- printf "%s\n" "${insert}"
- sed -n '/^INSERT$/,$p' "${src}"
- else
- if [ -n "${insert}" ]; then
- printf "%s\n" "ERROR: INSERT line missing in: ${src}" 1>&2
- fi
- cat "${src}"
- fi
- ) | sed '/^INSERT$/d' > "${dst}.tmp"
- if ! cmp -s "${dst}" "${dst}.tmp"; then
- gen "${dst}"
- mv "${dst}.tmp" "${dst}"
- else
- rm -f "${dst}.tmp"
- fi
- }
- # (Re)generate include/applets.h
- s=`sed -n 's@^//applet:@@p' -- "$srctree"/*/*.c "$srctree"/*/*/*.c`
- generate \
- "$srctree/include/applets.src.h" \
- "include/applets.h" \
- "/* DO NOT EDIT. This file is generated from applets.src.h */" \
- "${s}"
- # (Re)generate include/usage.h
- # We add line continuation backslash after each line,
- # and insert empty line before each line which doesn't start
- # with space or tab
- # (note: we need to use \\\\ because of ``)
- s=`sed -n -e 's@^//usage:\([ \t].*\)$@\1 \\\\@p' -e 's@^//usage:\([^ \t].*\)$@\n\1 \\\\@p' -- "$srctree"/*/*.c "$srctree"/*/*/*.c`
- generate \
- "$srctree/include/usage.src.h" \
- "include/usage.h" \
- "/* DO NOT EDIT. This file is generated from usage.src.h */" \
- "${s}"
- # (Re)generate */Kbuild and */Config.in
- { cd -- "$srctree" && find . -type d; } | while read -r d; do
- d="${d#./}"
- src="$srctree/$d/Kbuild.src"
- dst="$d/Kbuild"
- if test -f "$src"; then
- mkdir -p -- "$d" 2>/dev/null
- s=`sed -n 's@^//kbuild:@@p' -- "$srctree/$d"/*.c`
- generate \
- "${src}" "${dst}" \
- "# DO NOT EDIT. This file is generated from Kbuild.src" \
- "${s}"
- fi
- src="$srctree/$d/Config.src"
- dst="$d/Config.in"
- if test -f "$src"; then
- mkdir -p -- "$d" 2>/dev/null
- s=`sed -n 's@^//config:@@p' -- "$srctree/$d"/*.c`
- generate \
- "${src}" "${dst}" \
- "# DO NOT EDIT. This file is generated from Config.src" \
- "${s}"
- fi
- done
- # Last read failed. This is normal. Don't exit with its error code:
- exit 0
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